PeachParts Mercedes-Benz Forum - View Single Post

pawoSD · #5 12-01-2005, 08:13 PM

Boy do I love my voltage gauge I installed in the dash, tells me exactly what the system is at at any time the key is in position 1 or further... I get about 13V in "accesory" mode, then it falls to around 10.3V when I go to glow, then it "hops" between 8 and 11ish when cranking (very breifly, never takes more than 1 crank when warm out or with block heater, or 3-5 cranks in -5 and up w/out a heater.) 1 year old DieHard International. its held up like a beast so far....I even left my dome light on for 13 hours by accident before, voltage when I put the key in? 13V! Big batteries rock!

System voltage without defroster on and blower on high etc.. is around 14.2V, with blower at level 5 its 13.7ish, and with the rear defroster+headlights etc all on it will fall to around 12 at idle and manages 13ish when above 1300rpm or so.

Someday when my alternator bites the dust (its been humming great and problem free the last 26k...) I want to go to an 80 or 90amp one....then I will always have 14V, even with the afterglow and all other things on....